1 /* bracecomp.c -- Complete a filename with the possible completions enclosed
2 in csh-style braces such that the list of completions is available to the
5 /* Original version by tromey@cns.caltech.edu, Fri Feb 7 1992. */
7 /* Copyright (C) 1993-2009 Free Software Foundation, Inc.
9 This file is part of GNU Bash, the Bourne Again SHell.
11 Bash is free software: you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation, either version 3 of the License, or
14 (at your option) any later version.
16 Bash is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with Bash. If not, see <http://www.gnu.org/licenses/>.
27 #if defined (BRACE_EXPANSION) && defined (READLINE)
31 #if defined (HAVE_UNISTD_H)
33 # include <sys/types.h>
42 #include <readline/readline.h>
44 static int _strcompare __P((char **, char **));
46 /* Find greatest common prefix of two strings. */
53 if (s1 == NULL || s2 == NULL)
56 for (i = 0; *s1 && *s2; ++s1, ++s2, ++i)
66 really_munge_braces (array, real_start, real_end, gcd_zero)
68 int real_start, real_end, gcd_zero;
71 char *result, *subterm, *x;
72 int result_size, flag, tlen;
76 if (real_start == real_end)
78 x = array[real_start] ? sh_backslash_quote (array[real_start] + gcd_zero, 0, 0)
79 : sh_backslash_quote (array[0], 0, 0);
83 result = (char *)xmalloc (result_size = 16);
86 for (start = real_start; start < real_end; start = end + 1)
88 gcd = strlen (array[start]);
89 for (end = start + 1; end < real_end; end++)
93 temp = string_gcd (array[start], array[end]);
102 if (gcd_zero == 0 && start == real_start && end != (real_end - 1))
104 /* In this case, add in a leading '{', because we are at
105 top level, and there isn't a consistent prefix. */
107 result = (char *)xrealloc (result, result_size);
108 result[0] = '{'; result[1] = '\0';
112 /* Make sure we backslash quote every substring we insert into the
113 resultant brace expression. This is so the default filename
114 quoting function won't inappropriately quote the braces. */
117 x = savestring (array[start] + gcd_zero);
118 subterm = sh_backslash_quote (x, 0, 0);
123 /* If there is more than one element in the subarray,
124 insert the (quoted) prefix and an opening brace. */
125 tlen = gcd - gcd_zero;
126 x = (char *)xmalloc (tlen + 1);
127 strncpy (x, array[start] + gcd_zero, tlen);
129 subterm = sh_backslash_quote (x, 0, 0);
131 result_size += strlen (subterm) + 1;
132 result = (char *)xrealloc (result, result_size);
133 strcat (result, subterm);
135 strcat (result, "{");
136 subterm = really_munge_braces (array, start, end + 1, gcd);
137 subterm[strlen (subterm) - 1] = '}';
140 result_size += strlen (subterm) + 1;
141 result = (char *)xrealloc (result, result_size);
142 strcat (result, subterm);
143 strcat (result, ",");
148 result[strlen (result) - 1] = flag ? '}' : '\0';
158 result = **s1 - **s2;
160 result = strcmp (*s1, *s2);
166 hack_braces_completion (names)
172 i = strvec_len (names);
173 if (MB_CUR_MAX > 1 && i > 2)
174 qsort (names+1, i-1, sizeof (char *), (QSFUNC *)_strcompare);
176 temp = really_munge_braces (names, 1, i, 0);
178 for (i = 0; names[i]; ++i)
187 /* We handle quoting ourselves within hack_braces_completion, so we turn off
188 rl_filename_quoting_desired and rl_filename_quoting_function. */
190 bash_brace_completion (count, ignore)
193 rl_compignore_func_t *orig_ignore_func;
194 rl_compentry_func_t *orig_entry_func;
195 rl_quote_func_t *orig_quoting_func;
196 rl_completion_func_t *orig_attempt_func;
197 int orig_quoting_desired, r;
199 orig_ignore_func = rl_ignore_some_completions_function;
200 orig_attempt_func = rl_attempted_completion_function;
201 orig_entry_func = rl_completion_entry_function;
202 orig_quoting_func = rl_filename_quoting_function;
203 orig_quoting_desired = rl_filename_quoting_desired;
205 rl_completion_entry_function = rl_filename_completion_function;
206 rl_attempted_completion_function = (rl_completion_func_t *)NULL;
207 rl_ignore_some_completions_function = hack_braces_completion;
208 rl_filename_quoting_function = (rl_quote_func_t *)NULL;
209 rl_filename_quoting_desired = 0;
211 r = rl_complete_internal (TAB);
213 rl_ignore_some_completions_function = orig_ignore_func;
214 rl_attempted_completion_function = orig_attempt_func;
215 rl_completion_entry_function = orig_entry_func;
216 rl_filename_quoting_function = orig_quoting_func;
217 rl_filename_quoting_desired = orig_quoting_desired;
221 #endif /* BRACE_EXPANSION && READLINE */